Joseph “Joe Boy” Sclafani – a Gambino crime family soldier who’s considered a career offender under the law – now is looking at 14-17 years in prison.

Even if Brooklyn federal Judge John Gleeson gives him credit for the two years he’s served awaiting trial – and he eventually gets another two-year credit for good behavior in prison – Sclafani still is looking at around a decade before he can stroll along a tropical beach with his intended.

Rizzo is the granddaughter of late Bonanno wiseguy Benjamin “Lefty Guns” Ruggiero, who mentored the young “Donnie Brasco” – not knowing he actually was an undercover FBI agent named Joseph Pistone.

Ruggiero was portrayed by Al Pacino in the film “Donnie Brasco”, Hollywood’s take on that successful FBI infiltration of the mob.

Sclafani, 47, has a long criminal history. Back in 1989, he was wounded in the mob rub-out of Costabile “Gus” Farace, a suspect in the murder of a Drug Enforcement Administration agent.

He later was convicted of helping Farace evade a federal manhunt.

Rizzo recently told Page Six that despite Sclafani’s current legal woes, she’s still planning a 500-guest wedding in June – even though the jailed wiseguy is not expected to be present.